NSCI 225 Exam 1 University of North Carolina at Chapel Hill |
UPDATED Questions with 100% Verified Answers
Question:
course of perceptual experience
Answer:
Environmental stimulus --> stimulus on receptor --> transduction --> processing -->
perception --> recognition --> action
Question:
environmental stimulus
Answer:
what's actually out there
Question:
stimulus on receptors
Answer:
light that reaches photoreceptors
Question:
transduction
Answer:
light stimulus --> electrical signal
Question:
processing
Answer:
of electrical signal by brain
Question:
perception
Answer:
conscious experience that something is out there
,Question:
recognition
Answer:
of what you're perceiving (that's a dog)
Question:
action
Answer:
what you decide to do based on what you recognize (pet the dog)
Question:
bottom-up processing
Answer:
"what am i seeing?"
creating the image from sensory info as it comes in
Question:
top-down processing
Answer:
"is that something i've seen before?" - perception driven by cognition
brain applies what it knows/expects to perceive to fill in the blanks
Question:
where within perceptual process is knowledge integrated?
Answer:
everything past transduction
processing, perception, recognition, action
Question:
absolute threshold
Answer:
smallest amount of stimulus necessary to detect the stim
, Question:
difference threshold (DL)
Answer:
Weber
smallest diff between 2 stim that can be detected
Question:
DL formula
Answer:
K (constant for stim) * S (standard)
Question:
psychophysical analysis methods
Answer:
Fechner, mag estimation, recognition testing, reaction time, phenomenological report,
physical tasks/judgements
Question:
Fechner's psychophysical methods; objective?
Answer:
method of limits
method of adjustment
method of constant stimuli
find absolute threshold
Question:
method of limits
Answer:
stepwise
stim presented in ascending or descending order
--> vary ascending/descending and starting point to prevent cheating
Question:
method of adjustment
UPDATED Questions with 100% Verified Answers
Question:
course of perceptual experience
Answer:
Environmental stimulus --> stimulus on receptor --> transduction --> processing -->
perception --> recognition --> action
Question:
environmental stimulus
Answer:
what's actually out there
Question:
stimulus on receptors
Answer:
light that reaches photoreceptors
Question:
transduction
Answer:
light stimulus --> electrical signal
Question:
processing
Answer:
of electrical signal by brain
Question:
perception
Answer:
conscious experience that something is out there
,Question:
recognition
Answer:
of what you're perceiving (that's a dog)
Question:
action
Answer:
what you decide to do based on what you recognize (pet the dog)
Question:
bottom-up processing
Answer:
"what am i seeing?"
creating the image from sensory info as it comes in
Question:
top-down processing
Answer:
"is that something i've seen before?" - perception driven by cognition
brain applies what it knows/expects to perceive to fill in the blanks
Question:
where within perceptual process is knowledge integrated?
Answer:
everything past transduction
processing, perception, recognition, action
Question:
absolute threshold
Answer:
smallest amount of stimulus necessary to detect the stim
, Question:
difference threshold (DL)
Answer:
Weber
smallest diff between 2 stim that can be detected
Question:
DL formula
Answer:
K (constant for stim) * S (standard)
Question:
psychophysical analysis methods
Answer:
Fechner, mag estimation, recognition testing, reaction time, phenomenological report,
physical tasks/judgements
Question:
Fechner's psychophysical methods; objective?
Answer:
method of limits
method of adjustment
method of constant stimuli
find absolute threshold
Question:
method of limits
Answer:
stepwise
stim presented in ascending or descending order
--> vary ascending/descending and starting point to prevent cheating
Question:
method of adjustment
